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Ignition coil assembly utilizing a single internal floating shield buffered at one end

a floating shield and coil technology, applied in the direction of coils, transformers/inductance details, inductances, etc., can solve the problem of more expensive materials than alternative materials, and achieve the effect of reducing electrical stress and cos

Inactive Publication Date: 2006-05-23
DELPHI TECH INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

This design reduces material costs by minimizing the need for high-cost dielectric materials while maintaining mechanical integrity and reducing electrical stress, thereby enhancing the reliability and efficiency of the ignition system.

Problems solved by technology

These materials are more expensive than alternative materials that are available to perform the mechanical requirements of the case.

Method used

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  • Ignition coil assembly utilizing a single internal floating shield buffered at one end
  • Ignition coil assembly utilizing a single internal floating shield buffered at one end
  • Ignition coil assembly utilizing a single internal floating shield buffered at one end

Examples

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Embodiment Construction

[0014]Referring now to the drawings wherein like reference numerals are used to identify identical components in the various views, FIG. 1 is a top plan view of an ignition apparatus 10 in accordance with the present invention. As is generally known, ignition apparatus 10 may be coupled to, for example, an ignition system 12, which may be configured to contain circuitry for controlling the charging and discharging of apparatus 10.

[0015]The apparatus 10 may be coupled by way of a cable 14 or the like to (i) ignition control system 12 and (ii) a power source 16 (e.g., a battery in an automotive vehicle embodiment).

[0016]With reference to FIG. 2, the relatively high-voltage produced by ignition apparatus 10 is provided to a spark plug 18 remotely mounted from ignition apparatus 10 by way of a conventional high-voltage (HV) ignition cable 20. Spark plug 18 may be retained by a threaded engagement with a spark plug opening in a combustion chamber of the engine (as conventional) with the ...

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Abstract

An ignition apparatus includes a core formed of magnetically-permeable material extending along a main axis, a primary winding disposed about the core, a secondary winding disposed on a secondary winding spool wherein at least one of the secondary winding leads is connected to a high-voltage connector terminal configured for connection to a spark plug, a case formed of electrical insulating material, and a magnetically-permeable shield disposed inwardly of the case and allowed to electrically float with respect to ground and a power source.

Description

FIELD OF THE INVENTION[0001]The present invention relates generally to ignition coils for developing a spark firing voltage that is applied to one or more remotely mounted spark plugs of an internal combustion engine.DESCRIPTION OF THE RELATED ART[0002]It is known to provide an ignition coil assembly utilizing a progressive wound secondary winding disposed remotely from the spark plugs as seen by reference to U.S. Pat. No. 6,556,118 entitled “SEPARATE MOUNT IGNITION COIL UTILIZING A PROGRESSIVE WOUND SECONDARY WINDING” issued to Skinner (“Skinner”). Skinner disclose an ignition coil assembly wherein a shield is located outwardly of a case and (which is electrically grounded) whereby the case defines a significant dielectric member, as in a traditional “pencil” coil. A “pencil” ignition coil, as known, exhibits a relatively slender shape configured to be mounted directly above and to a spark plug. In Skinner, the shield must be grounded and accordingly the case material selection is ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): H01F27/02H01F5/04H01F27/36H01F38/12
CPCH01F38/12H01F5/04H01F27/367H01F27/36H01F27/366
Inventor SKINNER, ALBERT ANTHONYHENRY, JAMES PATRICKKING, JEFF A.
Owner DELPHI TECH INC